Ian Teh has published three monographs, Undercurrents (2008), Traces (2011) and Confluence (2014). His work is part of the permanent collection at the Los Angeles County Museum of Art (LACMA), The Museum of Fine Arts, Houston (MFAH) and the Hood Museum in the USA. Selected solo shows include the Jack Shainman Gallery in New York in 2004, Flowers in London in 2011 and the Kunsthal Museum in Rotterdam in 2012.

Teh has received several honours, in 2018 he was awarded a travel grant from the Pulitzer Centre for Crisis Reporting and presented his work on climate change at the prestigious 2018 National Geographic Photography Seminar. He is also the recipient of the International Photoreporter Grant 2016 the Abigail Cohen Fellowship in Documentary Photography 2014 and the Emergency Fund 2011 from the Magnum Foundation. In 2013, he was elected by the Open Society Foundations to exhibit in New York at the Moving Walls Exhibition. In 2015, during the COP21 Paris climate talks, large poster images of his work were displayed on the streets of Paris as a collaborative initiative by #Dysturb and Magnum Foundation. He is a co-exhibitor in Coal + Ice, an environmental group show of acclaimed photographers and curated by Susan Meiselas. It was exhibited at the Official Residence of the US Ambassador to France during COP21.

Teh’s work has been published internationally in magazines such as National Geographic, The New Yorker, Bloomberg Businessweek and Granta. Since 2013, he has exhibited as well as conducted masterclasses at Obscura Festival of Photography, Malaysia’s foremost photo festival. He is a tutor at Cambodia's Angkor Photo Festival since 2014. Teh is a member of the British agency, Panos Pictures.